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30 Cards in this Set
- Front
- Back
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The clear dome covering the iris and pupil is called the ______.
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cornea
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The aqueous fluid drains from the eye at the ______________.
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anterior chamber angle
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The __________ is jelly filling the back of the eye.
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vitreous
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A group of many specific neural layers creating an electrical signal from light is the ____________.
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retina
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What type of tissue is lost in the eye as a person ages?
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corneal endothelium
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True or false: As a person ages, their eye becomes more pliable.
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false
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A reduced transparency of the crystalline lens of the eye is a ________.
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cataract
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True or false: A cataract is not a film on the front of the cornea.
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true
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True or false: Blindness caused by cataracts are not reversible.
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false
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List risk factors for cataracts.
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increased age, smoking, diabetes, trauma, exposure to the sun, and corticosteroids
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________ is a gradual deterioration of the central retina with subsequent loss of function.
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Age Related Macular Degerneration (AMD)
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True or false: AMD is usually irreversible.
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true
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Does AMD cause total blindness?
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no
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Which type of ARMD results from blood or serum leaking from newly formed blood vessels beneath the retina?
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Wet ARMD
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True or false: Prognosis is typically good for wet ARMD.
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false
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What is the strongest risk factor for macular degerneration?
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genetics
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_________ is caused by increased pressure in the anterior chamber of the eye.
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glaucoma
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Which type of glaucoma is analogous to a clog in a drain?
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open-angle glaucoma
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True or false: Vision is irreversibly damaged at the end stages of open-angle glaucoma.
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true
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Which type of glaucoma is analogous to a completely shut drain?
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closed-angle drain
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What are some symptoms of closed-angle glaucoma?
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sudden severe eye pain, unilateral headache, halos, nausea and vomiting, blurred vision and photophobia
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True or false: Closed-angle glaucoma is an opthalmic emergency.
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true
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__________ is a response to poor blood glucose control.
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diabetic retinopathy
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The damage from non-proliferative diabetic retinopathy can lead to what three things?
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hemorrhages, cotton wool spots, and microaneurysms
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What is the major cause of vision loss in NPDR?
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macular edema
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What is the major source of vision loss in PDR?
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vitreous humor
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What is the most common primary ocular tumor in adults?
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ocular melanoma
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What is the most common childhood ocular tumor?
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retinoblastoma
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Name two infections causes of world wide blindness.
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trachoma and onchocerciasis
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What virus is associated with blindness in AIDS patients?
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cytomegalovirus (CMV)
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